CVE-2026-27776 is a vulnerability classified as insecure deserialization in the IM-LogicDesigner module of the intra-mart Accel Platform developed by NTT DATA INTRAMART Corporation. This vulnerability affects versions from 2017 Spring (8.0.4) through 2025 Autumn (8.0.27). Insecure deserialization occurs when untrusted data is deserialized without sufficient validation, allowing attackers to manipulate serialized objects to execute arbitrary code. In this case, an attacker with administrative privileges can craft a malicious file that, when imported via the IM-LogicDesigner module, triggers the deserialization flaw and executes arbitrary code on the system. The attack vector requires network access (AV:N) and administrative privileges (PR:H), but no user interaction (UI:N). The vulnerability impacts confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing full system compromise. The scope is unchanged (S:U), meaning the exploit affects only the vulnerable component. Although no public exploits are known at this time, the vulnerability's nature and impact make it a critical concern for organizations using the affected platform. The lack of patch links suggests that organizations should monitor vendor advisories closely for updates or mitigations.

The impact of CVE-2026-27776 is significant for organizations using the intra-mart Accel Platform with the IM-LogicDesigner module deployed. Successful exploitation can lead to arbitrary code execution with administrative privileges, enabling attackers to fully compromise affected systems. This can result in data breaches, unauthorized access to sensitive information, disruption of business processes, and potential lateral movement within the network. Given the administrative privilege requirement, the attack surface is somewhat limited to trusted users or compromised credentials, but the severity remains high due to the potential damage. Organizations relying on this platform for critical business applications may face operational downtime, reputational damage, and regulatory consequences if exploited. The absence of known exploits in the wild provides a window for proactive mitigation, but the risk remains elevated due to the ease of exploitation once administrative access is obtained.

To mitigate CVE-2026-27776, organizations should first verify whether the IM-LogicDesigner module is deployed in their intra-mart Accel Platform environment. If deployed, restrict administrative privileges strictly to trusted personnel and enforce strong authentication mechanisms, such as multi-factor authentication, to reduce the risk of credential compromise. Monitor and audit import activities within IM-LogicDesigner to detect any unusual or unauthorized file imports. Implement network segmentation to limit access to administrative interfaces and reduce exposure. Since no official patches are currently linked, organizations should engage with NTT DATA INTRAMART Corporation for updates or workarounds. Additionally, consider employing application-layer firewalls or runtime application self-protection (RASP) solutions to detect and block deserialization attacks. Regularly update and patch all related software components as vendor fixes become available. Finally, conduct security awareness training for administrators to recognize and avoid importing untrusted or suspicious files.